If you need a tool that can change your computer's fan speeds, read the temperatures of your motherboard
and your hard disk, read voltages and fan speeds and check the status of your hard disk using S.M.A.R.T.
or SCSI attributes, then you came to the right place. SpeedFan is the software to go. It is fully configurable
and you can create custom events to handle every situation automatically. SpeedFan works under Windows
9x, ME, NT, 2000, 2003, XP, Vista, Windows 7, Windows 8, Windows 10. SpeedFan works under Windows
Server 2003, Windows Server 2008 and Windows Server 2012 too. SpeedFan works fine on 64 bit too. The relevant driver is now signed with my digital certificate.
And this all costs you absolutely nothing!

Download

The latest version is SpeedFan 4.52. Some tools (like Norton
Internet Security or ZoneAlarm) may interfere with the download process. Basically, the
REFERER field must be properly sent to SpeedFan's web server. Download won't work if any
tool blocks it. For webmasters: if you do not want to mirror the download locally
to your website, please link to
http://www.almico.com/speedfan.php and not to the direct download as it won't work.
Thank you for your cooperation.

What is SpeedFan

SpeedFan lets you take a deeper view at the status of your computer. Almost
every computer includes support for hardware monitoring. Accessing digital temperature sensors
is really useful. If you are trying to figure out why your PC hangs when under heavy load
or after some hours of usage, SpeedFan might help you find the real cause. Very often it is a poor
power supply, or an improperly installed heatsink that lead to behaviours that we tend to associate (incorrectly)
with errors from the operating system. SpeedFan automatically searches your computer
for informative chips: the hardware monitor chips. SpeedFan can display voltages,
fan speeds and temperatures. On rare occasions, the BIOS doesn't activate
such features. SpeedFan tries to enable them as long as this is a safe thing to do. Not only the
motherboard is searched, but also some video cards and almost every currently sold hard disk. SpeedFan can
access status info from EIDE, SATA and even SCSI drives, consistently showing
internal data that can be used to diagnose current and future hard disk failures. This is known as
S.M.A.R.T. (Self-Monitoring Analysis and Reporting Technology). At the lowest level, the SpeedFan hardware monitor
software can access digital temperature sensors, but its main feature is its ability to
control fan speeds according to the temperatures inside your PC, thus
reducing noise.

Disclaimer

SpeedFan is an extremely powerful tool. It can be very useful in helping you find the reasons for an unpredictable
reboot or a failing hard disk. It can tell you whether you are likely to experience temperature
related issues and can help you to greatly reduce the noise at work or while watching a movie. But this
great power requires access to a lot of resources on your motherboard and it might be that your
hardware does not like such kind of access. SpeedFan is used worldwide since 2000 and there are so
many happy users out there, but you should always remember that no program can be perfect and therefore I
can't be held responsible if SpeedFan causes any damage to your system.